EP 2721767 A2 20140423 - AUTHENTICATOR, AUTHENTICATEE AND AUTHENTICATION METHOD
Title (en)
AUTHENTICATOR, AUTHENTICATEE AND AUTHENTICATION METHOD
Title (de)
AUTHENTIFIZIERER, AUTHENTIFIZIERTER UND AUTHENTIFIZIERUNGSVERFAHREN
Title (fr)
AUTHENTIFIANT, AUTHENTIFIÉ ET PROCÉDÉ D'AUTHENTIFICATION
Publication
Application
Priority
- JP 2011135644 A 20110617
- JP 2012054500 W 20120217
Abstract (en)
[origin: WO2012172832A2] According to one embodiment, an authentication method between an authenticatee which stores key information having a data structure composed of a key transition record, secret information XY of a matrix form, and secret information XYE which is created by encrypting the secret information XY, and an authenticator which authenticates the authenticatee, includes selecting, by the authenticator, a record corresponding to a device index of the authenticator from the key information which is received from the authenticatee, and decrypting the record by a device key, thereby taking out a key transition, and executing, by the authenticator, a decryption process on the secret information XYE, which is received from the authenticatee, by using the corresponding key transition, and sharing the secret information XY.
IPC 8 full level
CPC (source: EP US)
H04L 9/0819 (2013.01 - EP US); H04L 9/085 (2013.01 - US); H04L 9/3242 (2013.01 - US); H04L 9/3271 (2013.01 - EP US)
Citation (search report)
See references of WO 2012172832A2
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2012172832 A2 20121220; WO 2012172832 A3 20130523; CN 103404077 A 20131120; EP 2721767 A2 20140423; JP 2013005293 A 20130107; KR 20130129431 A 20131128; TW 201301838 A 20130101; TW I491239 B 20150701; US 2014289526 A1 20140925; US 9544138 B2 20170110
DOCDB simple family (application)
JP 2012054500 W 20120217; CN 201280010836 A 20120217; EP 12715449 A 20120217; JP 2011135644 A 20110617; KR 20137022688 A 20120217; TW 101106094 A 20120223; US 201213985431 A 20120217